Sight for firearms.



'APPLIOATION FILED JAN. 16. 1907.

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Specification of Letters Patent.

SIG-HT FOR FIREARMS.

Patented Dec. 3, 1907.

Application filed January 16.1907. Serial No. 352626 To all whom it our C(IILCT'I'z-J lirit known that we, .lAii-ins llmnmncn and Giannin S. \"Hccox, citizens of the .lnitcd States, and residents of Middleficld,

in the county of Middicsex and State of Connecticut, have invented certain new and useful Improvements in Sights for Firearms, of which the following is a full, clear, and exact specification.

Our invention relates to that class of sights for firearms known as leaf or notched sights, or that in which the line of aim is taken centrally through a notch or depres sion in a. thin leaf or blade mounted vertically on the arm between the front sight and posi- -tained, as hereinafter more fully described and claimed.

1n the accompanying drawings forming a part of this specification, Figure 1 is a side' elevation of a folding leaf sight embodying my improvements. F ig. 2 is a rear elevation of Fig. 1, showing the rofile of the sighting notch. Fig. 3 is an e ovation similar to Fig. 2 showing the sight blades re versed to provide a sighting notch of differ. out form. Fig. 4 is 9. Vertical longitudinal cross section on the 'line XX of Fig. 3. Fig. 5 is a rear elevation of the folding leaf de-v tached from the base and with the sight blades removed. Fig. 6 is a horizontal section through the base on the pivotal plane of the leaf, or line XX of Fig. 1. Figs. 7 and 8 are views of the sight blades removed from the'lc'af. Fig; 9 is a central cross section through the base.

Referring to the drawings A designates sight base of a common and well known form having beveled front and rear edges 6 adapted to be inserted in a transverse dovetailed notch on the upper side of the barrel of a firearm. The configuration of the upper I surface of the base is such that a hinge ear (1 is provided at each end thereof, in the central vertical plane between the beveled edges b. The perforations 6 through. the cars are in alincment with each other and screw threaded to receive the screw studs f, which are inserted from the outer sides of the ears and are provided with the reduced cylindrical portions g projecting inwardly from the cars or toward each other, as shown in Fig. 6. The

said cylindrical portions 9 comprise the piv- 'ots upon which the folding lea or sight car;- rying part is hinged. It is common in this class of sights to mount apair of leaves upon the same axis, in which case, as in the drawing, the main leaf H may be provided with a pair of eyes i fitting between the hinge ears d, and the secondary leaf L formed with s.

sin is eye M fitted between those of themain lea It is to the main leaf H that my improvements are shown'to be applied, and

which are described. as follows. The leaf is formed with a horizontal groove R extending entirely across its rear face, of dovetailed cross section having the greater width at the bottom, or with the bevel of its sides overhanging the groove; At the central part of the leaf is 2. space if, the depth of which is substantially coincident with the Width of the roove. In the groove are fitted a pair of t 'n blades n, one on each end of the leaf and arranged with their inner ends overlapping upon the space t. The ends of the blades are vertical or square with the groove R for a distance from their lower corners and above the said vertical parts they are cut back or away from the planes thereof in such shape that when laced together they will form a sighting notch as r in Fig. 2, and 1". in Fig. 3. The configuration of the said notchmay be triangular as shown in Fig. 2, or semicircular as in Fig. 3, or of any other required form. Different shaped profiles may be formed at opposite ends of the blades as shown in the drawings, and theparts re versed in the groove R to provide two styles of notches, as fully illustrated in Figs. 2 and 8.

The blades are secured in the groove R by means of binding screws i screwed into screw threaded erforations i in the leaf on the lower side of the groove, in such position that the heads of the screws will impinge slightly upon the lower edges of the blades n to. clamp the blades is their seats. Suitable countersinks i are formed around the perforations i to receive the heads of the screws white substance inlaid in the leaf.

and permit the latter to be screwed down below the surface of the leaf to the extent necessary to insure contact with the blades when the latter are in any degree below said surface of the leaf.

In operation the blades n are adjusted in the groove 'R of. the leaf with the vertical parts of their inner ends nearly abutting together at the central cross plane of the leaf, which is the vertical plane of the axis of the gun barrel. The resultingspace between the ends of the blade comprises an exceedingly attenuated vertical slot 0 placed exactly beneath the lowest or central part of the sighting notch, and in continuation therewith. To the eye, in aiming this slot presents the appearance of a thin line of light which is of much less width than a clearly visible line out or formed by graving, and much brighter than a bar of ivory or other It serves to define the vertical sighting plane on the field of vision with great clearness and the utmost degree of precision.

The'actualwidth. of the slot e is in practice very minute, and is necessarily exaggerated in the drawing, as it is in fact less than the width of an ink line. The smallest space possible to provide, which is with the ends of the blades set as closely together as they can be placed without being in contact, exhibits a distinct line of light .to' the eye, in aiming,- andis of sufficicntwidth tobe clearly distinguished. It is so minute that it is most ad vantageously made or produced by using separate. or individual parts which may be finely adjusted relatively to each other.

The sight leaf H is adapted to be folded forward and down to the horizontal position to permit the use of the secondary sight leaf L which may then be raised to place. The leaf L folds correspondingly down and rearward while the main leaf is elevated, as shown in the drawings. are wholly independent of my invention, which relates to the combination with the sighting notch of a sight, of a vertical line of light belowthe notch in the central vertical plane thereof. It is equally applicable to both folding and nonfolding sight leaves or those of any-other class.

.Ne claim as our invention: I

1. A sight for firearms having an attenuated slot permitting the passage of a mere line of light, said slot being formed between the edges of two separate independent members said edges being nearly in contact.

2. A sight for firearms comprising a leaf or blade divided into separate parts having a space between their edges that forms an attenuated slot permitting the passage of a mere line of hght in the vertical sighting plane said edges being nearly in contact.

But these features I). A sight for firearms comprising a leaf or blade having a sighting notrhand an attcnuated slot below and central of the notch permitting the passage of a more line of light in the vertical sighting plane said blade consisting of two so arate parts between the edges of which sail. notch and slot are formed said slot being between portions of the edges that are nearly in contact.

4. In a sight for firearms the combination. of a leaf and a pair of blades secured thereon with their edges separated to provide an intervening attenuated slot in the vertical sighting plane.

I 5. In a si ht for firearms the combination of a leaf an a pair of blades secured on the leaf with their edges separated to provide an intervening sighting notch and an attenuated slot below and in continuation therewith in the vertical sighting plane.

6. Ina sight for firearms the combination of a leaf having a horizontal groove and a central sighting s ace, a pair of blades movably seated in t e groove with their ends overlapping upon the sighting space of the leaf and in juxtaposition, and means for clamping the blades in their seats, the configuration of the said ends of the blades com prising a sighting notch and a vertical attenuated slot in continuation thereof in the vertic-a1 sigl'iting plane.

7. In a sight for of the leaf having the horizontal dovetailed firearms the combination groove and central sighting space, the blades seated in the groove and overlapping-upon the sighting space, and the set screws, screwedintothe leaf with their heads impinging liFOIl the blades to clamp them in place, sai blades forming an attenuated slot between themin the vertical sighting plane,

and a sighting notch above the slot, substantially as'specified.

, 8. A sight for firearms having two separate adjustable blades whose edges are separated by a space to form an attenuated slot permitting the passage of a mere line of light saidedges being nearly in contact.

9. In asight for firearms, the combination of a leaf having a horizontal groove, a pair of blades movably seated in the grooves in line Wlth each other with their adjacent edges separated by a s ace to form an "attenuated 'slot adapted to evelop a line of light.

Signed by us at liliddlefield, Connecticut this 28th day of December 1906.

' JAMES \VINDRIDGE. GEORGE S. \VlLCOX. Witnesses as to James l/Vindridge;

Gnouon L. BARNEs, IRADELL L. 000K. Witnesses as to George S. VVllGOXI ALFRED H. AUGUR, GORDON S. Goonnicn. 

